Die



-CLAJPARSON S, S. S. COOK, A. Q. CARNEGIE, J. FORD AND M. BONE.

DIE.

APPLICATION FILED MAY 10. 1920.

2 SHEETYSSHEET 1- INVENTOKS: Charles 4. Parsons GHZQY C00 4 Alfre Oar-ng hn 8,

BY Matthew Bone.

6 1w, mmfl MTURNEY Patented May 31, 1921.

C. A. PARSONS, S. S. COOK, A. QL CARNEGIE, L FORD AND M. BONE.

DIE. v Armcmou min Mylo. 1920.

1,379,717. Patented May 31;.19211.

2 SHEETS-SHEET 2.

INVENTOKS Charles A e/5on5. Stan Ze COOK,

A zma Q Carnegie. Ja hn Ford, Matthew Bane.

wwmm MWRNEY UNHTED CHARLES ALGERNQN PARSONS, STANLEY SMITH COOK, ALFRED QUINTIN CARNEGIE, JOHN FORD, AND HEATTHEVT BONE, O16 NEVIGASTLE-UPON-TYNE, ENGLAND; SAID COOK, CARNEGIE, FORD, AND BONE, ASSIGNORS TO SAID PARSONS.

DIE.

Specification of Letters Patent.

Patented lallay 31, 13921.

Application filed May 10, 1920. Serial No. 380,363.

To all whom it may concern:

Be it known that we, the Honorable Sir CHARLES ALeERNoN lPAnsoNs K. C. 13., STANLEY SMITH Coon ALFRED QUINTIN CARNEGIE, JOHN FORD, and MATTHEW BONE all subjects of the King of Great Britain and Ireland, and residing at Heaton Works, Newcastle-upon-Tyne, in the county of Northumberland, England, have invented certain new and useful Improvements in Dies, of which the following is a specification.

This invention relates to dies in'which objects' are formed from billets of metal partly as a drop forging and partly by a process of extrusion.

The object of the invention is to provide means whereby the parts of the die may be readily separated for removal of the object after operation of the rain and rapidly brought into position again for a fresh operation. V

The invention consists in a die of the type set forth formed in two or more parts so arranged that they can be separated by a motion applied primarily in a direction parallel to the plane of separation between them.

The invention also consists in a support for a die of the type set forth formed with an opening of such a shape that in the operative position of the die the parts are brought together but may be separated by moving them in a direction parallel to the axis along which the ram acts.

The invention further consists in a support for a die of the type set forth formed with a rectangular opening two opposite sides of which are parallel, the remaining sides converging in the direction in which the ram acts.

The invention moreover consists in projections on each part of the die cooperating with converging slots in the parallel sides of the opening in which the die fits so that motion of the portions of the die parallel to the axis of the opening causes separation between them.

The invention still further consists in a .die of the type set forth made in four parts the parts having projections to cooperate with two pairs of converging slots so that the two portions of the die to one side of the axis along which the ram acts may be separated by different amounts from the two portions on the other side of the axis.

The invention also consists in shaping the slots cooperating with a four-part die so that when the projections move along the slots sliding motion takes place between the pair of parts on each side of the axis along which the ram acts The invention moreover consists in means for operating the opening mechanism of the die comprising a hand lever connected by links to a pair of bars capable of sliding in the support of the die and provided with projections to engage the portions into which the die is divided.

The invention also consists in the im proved die hereinafter described While our invention is of general utility it is especially applicable in the process of manufacture of turbine blades as set forth in the specifications of British applications Nos. 16,910 of 1918 and 12,252 of 1919, and it will be described as employed in this connectlon.

Referring to the accompanying drawings:

Figure 1 is a section of the die at the vertical plane dividing it;

Fig. 2 is a vertical section of the die taken at right angles to Fig. 1, and showing the finished blade in position;

Fig. 3 is a view similar to Fig. 2 but showingthe portions of the die in their opened position;

Fig. 4 is a plan of the die in its closed position.

For the manufacture of turbine blades by this method the die is conveniently made in four parts 1, 2, 3 and i, one of the division planes between the parts containing the axis of the finished turbine blade and the other being at right angles to this axis. The transverse division is preferably made at the point where the blade proper merges into its base or into the mass of metal from which the base is subsequently to be machined, that is to say, the two lower portions 3 and 4 of the complete die will contain the extrusion orifice 5 and the two upper portions the cavity 6 for the forma tion of the base of the blade.

The complete die, which fits, when closed, in an opening 7 in a suitable support 8, is wedge shaped. In structures embodying the invention to the best advantage, the wedge converges in the direction of extrusion and the support is relatively stationary. Although capable of various constructions, in the exemplification here shown, the complete die is rectangular in cross section and has two opposite sides converging downwardly (assuming the ram to act vertically downward), the other two sides being parallel.

The opening 7 in the support 8 in which the die fits is of the same shape and is pro vided with slots for guiding the movement of the die sections, as hereinafter described. When, as in the present embodiment, two faces of the support-opening are parallel, each of these faces has two slots 9 which converge over the wholeor a portion oftheir length at the same angle as, or a less angle than the converging sides of the opening.

Projections 10 on the portions of the die ride in these slots so that if the portions of the die be moved upward they will also be separated at the vertical plane which passes through the axis of the opening. This separation is sufficient to allow the finished blade 11 to fall between the two lower portions 3 and l of the die in which the separation between the two upper portions 7 1 and 2 of the die and then allows them to continue moving upward in a parallel direction, whereas the distance between the lower portions 3 and L of the die increases during the whole of their upward motion. The effect of this is that there is relative sliding between the upper and the lower portions. This sliding movement assists the blade ll to clear itself from the die portions to which it may have adhered through the squeezing of a certain amount of metal into the interstices between the upper and lower portions, so enabling it to drop through the lower portions freely.

When the blade has been thus discharged the portions of the die are again lowered andbrought into contact by cooperation of the slots and projections. This up-anddown movement of the die to release the blade and bring the parts back to their operative position is conveniently performed by fitting inthe support 8 on each side of the die a sliding bar '12 provided with projections 13 to engage the upper and lower portions. These bars are connected by links 14: to a pivoted lever 15 arranged to be readily rocked by hand, treadle, or any other suitable means.

A further movement of the'lever 15 0perating these sliding bars enables the die to be lifted sufficiently abovethe holder to be readily removed. v

The means which we :have shown for operatingthe die parts is illustrative of any means suitable for the purpose and is not to be regarded as restrictive upon the scope of the invention, which is defined by the appended claims.

Claims.

1. A die mechanism having a cavity to receive a billet and an orifice leading therefrom'through which a portion of the billet a blade, said die being divided into sections along a plane cutting the said cavity and orifice, means for moving the die in the general direction of theaxis of the cavity and orifice, and guide means for causing the sections to separate in said movement.

3. A die mechanism having a cavity to re-' ceive a billet and an orifice leading therefrom through which a portion of the billet may be extruded by drop forging to form a blade, said die being divided into sections along a plane cuttingsaid extruding orifice and said cavity, means for moving the die in the general directionof the axis of the cavity and orifice, and for separating the,

sections in said movement laterally in respect to the axis of the cavity and orifice,

and a support having walls against which the sections hear when in closed position.

4. In combination, a relatively stationary support having a wedge shaped opening, die

sections having a billet receiving cavity and an orifice through which a part of the billet is extruded, said 'die sections having their plane of separation cutting said cavity and orifice, and bearing against said support when in closed position, said support-opening converging in the direction of extrusion, and means for moving said die sections at an inclination to the axis of said orifice to separate the sections. 7 V

5. In combination, a support having an opening with two opposite sides convergent and the two other sides non-convergent, die sections having a billet receiving cavity and an orifice through which a part of the billet is extruded, said sections having their plans of separation midway between the convergent sides of said opening, and means for moving the sections at an inclination to the axis of the opening.

6. In combination, a support having an opening rectangular in cross section with two opposite sides convergent and the two other sides parallel with each other, die sections having a billet receiving cavity and an orifice through which a part of the billet is extruded, said sections having their plane of Separation perpendicular to the parallel sides of the opening of the support and midway between the convergent sides of said opening, and means for moving the sections at an inclination to the axis of the opening.

7. In combination, a support having a wedge shaped opening, die sections having a billet receiving cavity and an orifice through which a part of the billet is extruded, said sections having their plane of separation cutting said cavity and orifice, means for moving the die sections in the general direction of the axis of the cavity and orifice, the support being provided with a pair of converging slots, and projections on the die sections riding in said slots, whereby the die sections are separated upon movement by said moving means.

8. In combination, a support having an opening with two opposite sides convergent and the two other sides parallel, die sections having a billet receiving cavity and an orifice through which a part of the billet is extruded, said sections having their plane of separation cutting said cavity and orifice, means for moving the die sections in the general direction of the axis of the cavity and orifice, the parallel sides of said opening being provided with a pair of converging slots, and projections on the die sections riding in said slots, whereby the die sections are separated upon movement by said moving means.

9. A die having a cavity to receive a billet and an orifice through which a portion of the billet may be extruded to form a blade, said die being divided into sections substantially along a plane cutting the cavity and orifice and also transverse to said plane, a. pair of which sections define the cavity and the second pair of which define the orifice, means for separating the sections of the first" pair from each other and for separating in greater degree the sections of the second pair, sub stantially as described.

10. A die having a cavity to receive a billet and an orifice through which a portion of the billet may be extruded to form a blade, said die being divided into sections substantially along a plane cutting the cavity and orifice and also transverse to said plane, a pair of which sections define the cavity and the second pair of which define the orifice, means for separating the sections of the first pair laterally from each other and for separating in greater degree and laterally, the sections of the second pair, the pairs of sections having a relative sliding movement during separation, substantially as described.

11. A die having a cavity to receive a billet and an orifice through which a portion of the billet may be extruded to form a blade, said die being divided into sections along the orifice and cavity, and into other sections along a plane transverse to, and at the meeting point of, the orifice and cavity, and means for moving said die in a general direction lengthwise of said orifice and cavity and for separating the sections defining the cavity, and also the sections defining the orifice, the latter being separated to a greater degree than the former, substantially as described.

12. A die having a cavity to receive a billet and an orifice through which a portion of the billet may be extruded to form a blade, said die being divided into sections substantially along a plane cutting the cavity and orifice and also transverse to said plane, a pair of which sections define the cavity and the second pair of which define the orifice, means for separating the sections of the first pair laterally from each other and for separating in greater degree and laterally, the sections of the second pair, all of the sections having inclined outer sides and a support having inclined faces against which the sections bear when closed, substantially as described.

13. In combination, a support having a wedge shaped opening, a die having a billet receiving cavity and an orifice through which a part of the billet is extruded, said die being divided into four sections by two planes of division at right angles to each other, one plane cutting the cavity and the orifice, the other plane being transverse thereto, the support having slots which, for some distance diverge from and then become parallel to the first mentioned plane of division of the die, and projections on the die sections riding in said slots, whereby, upon movement of the die the two sections above the transverse plane of division are separated by amounts different from the separation of the two sections below said transverse plane.

1 1. A die mechanism according to claim 3 in which the means for moving the die consists of a pair of bars slidably mounted in the support and having projections engaging the die sections, substantially as described.

In testimony whereof we have signed our names to this specification.

CHARLES ALGERNON PARSONS. STANLEY SMITH COOK. ALFRED QUINTIN CARNEGIE. JOHN FORD.

llJlATTll-lEW BONE. 

